/// <summary>
/// Makes the search in the file
/// </summary>
/// <param name="searchLine">Search text</param>
/// <returns>Reference to Result object</returns>
public Result Search(String searchLine)
{
Result result = new Result(searchLine);
CancellationToken token;
if (result.TryGetToken(out token))
{
Task.Factory.StartNew(() =>
{
//First checker has no previous checker with tuner
Tuner tuner = null;
for (Int32 i = 0; i < this.partsCount; i++)
{
if (token.IsCancellationRequested)
{
return;
}
Checker currentChecker = checkers[i];
Tuner prevTuner = tuner;
tuner = currentChecker.Check(prevTuner, result, token);
}
if (tuner != null)
{
//Second subline in empty for the last Tuner
tuner.SetTuner(String.Empty);
}
}, token);
}
return(result);
}
/// <summary>
/// Checks the part of file and compare lines with search string
/// </summary>
/// <param name="prevTuner">Reference to previous Tuner</param>
/// <param name="result">Reference to Result</param>
/// <param name="token">Cancellation token</param>
/// <returns>Reference to new Tuner object, must be send to the next Checker</returns>
internal Tuner Check(Tuner prevTuner, Result result, CancellationToken token)
{
Tuner thisTuner = inTune == 0 ? new Tuner(this, result) : null;
Task.Factory.StartNew(() =>
{
var hashtable = hashtableWeakReference.Target as Hashtable;
// Hashtable can not be collect now
if (hashtable == null)
{
// Hashtable is not alive
lockSlim.EnterWriteLock();
if (token.IsCancellationRequested)
{
lockSlim.ExitWriteLock();
return;
}
// Make one more check
if (!TryReadFromHashtable(result, ref thisTuner, out hashtable))
{
hashtable = this.Parse(result, thisTuner, prevTuner, token);
this.hashtableWeakReference.Target = hashtable;
}
lockSlim.ExitWriteLock();
}
else
{
// Hashtable is alive, first and last substrings is set
lockSlim.EnterReadLock();
ReadFromHashtable(hashtable, result, ref thisTuner);
lockSlim.ExitReadLock();
}
if (prevTuner != null)
{
// Send subline to previous Tuner
prevTuner.SetTuner(this.firstSubline);
}
if (thisTuner != null && hashtable != null)
{
// Send reference to hashtable to the Tuner
thisTuner.RequestTune(hashtable);
}
}, token);
return(thisTuner);
}
